26666666666666 has 8 divisors (see below), whose sum is σ = 43076923076964. Its totient is φ = 12307692307680.

The previous prime is 26666666666599. The next prime is 26666666666671. The reversal of 26666666666666 is 66666666666662.

It can be written as a sum of positive squares in 2 ways, for example, as 21611071810441 + 5055594856225 = 4648771^2 + 2248465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×26666666666666² (a number of 28 digits) contains 22 as substring.

26666666666666 is a modest number, since divided by 6666666 gives 2666666 as remainder.

It is a Curzon number.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512820512795 + ... + 512820512846.

Almost surely, 2^{26666666666666} is an apocalyptic number.

26666666666666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

26666666666666 is a deficient number, since it is larger than the sum of its proper divisors (16410256410298).

26666666666666 is a wasteful number, since it uses less digits than its factorization.

26666666666666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025641025656.

The product of its digits is 26121388032, while the sum is 80.

The spelling of 26666666666666 in words is "twenty-six trillion, six hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-six".